6.3.6 Installing the pipe siphon assembly........................................................................................... 64
6.3.7 Installing the pipes ..................................................................................................................... 69
6.3.8 Installation of the hose lines ...................................................................................................... 70
6.3.9 Installing Remote Indicator II for remote monitoring (optional) ................................................. 71
6.4 Electrical installation .................................................................................................................. 74
6.4.1 Connection options for the oil mist detector (overview) ............................................................ 75
6.4.2 Electrical installation of the terminal box for the VN2020 series ............................................... 76
6.4.3 Electrical connection of the Remote Indicator II (optional) ........................................................ 84
6.4.4 Closing the terminal box after completing the electrical installation .......................................... 86
6.4.5 Connecting housing earth to the protective cover of the VN2020 ............................................. 86
6.5 Starting up for the first time ....................................................................................................... 88
6.5.1 Checklist for starting up for the first time ................................................................................... 89
6.5.2 Connecting the power supply .................................................................................................... 90
6.5.3 Setting the negative pressure at the measuring head of the VN2020 / VN2020 EX ................ 91
6.5.4 Setting the sensitivity on the VN2020 / VN2020 EX oil mist detector ....................................... 95
6.5.5 Function test when starting up for the first time ........................................................................ 96
6.5.6 Factory test by the engine builder with smoke generator on starting up ................................... 98
7 Manufacturer settings ........................................................................................................... 103
7.1 Parameter settings, VISATRON
®
VN2020 / VN2020 EX ........................................................ 103
8 Operation and use ................................................................................................................. 108
8.1 Check every time before operation ......................................................................................... 108
8.2 Operation under correct conditions ......................................................................................... 109
8.3 Switching the device on and off ............................................................................................... 109
8.4 Normal operation ..................................................................................................................... 109
8.5 LED check ............................................................................................................................... 110
8.6 Checking the supply pressure, sensor OMC and sensitivity ................................................... 111
8.7 “Oil mist pre-alarm” status indicator ........................................................................................ 111
8.8 “Oil mist alarm” status indicator ............................................................................................... 112
8.9 Confirming an oil mist alarm .................................................................................................... 113
9 Maintenance and repair ........................................................................................................ 115
9.1 Maintenance by the operator ................................................................................................... 115
9.1.1 Maintenance cycles for reliable operation ............................................................................... 116
9.1.2 Cleaning the light path on the measuring head (4,000 hours) ................................................ 119
9.1.3 Replacing the air filter element on the pressure reducer unit (4,000 hours) ........................... 124
9.1.4 Function test of the oil mist detector using smoke tube (4,000 hours) .................................... 129
9.1.5 Replacing the seal on the connection box (8,000 hours) ........................................................ 132
9.2 Inspection of the oil mist detector (16,000 hours or after 24 months) ..................................... 138
9.3 Repair by the operator ............................................................................................................. 138
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